Multicell shuttle box for looms



Feb. 27, 1934. J LASSKER 1,949,056

MULTICELL SHUTTLE BOX FOR LOOMS Filed March 16. 1952 A 1 9.1 F92 A TTTJRNEYS Patented Feb. 27, 1934 UNITED STATES PATENT GFFEE MULTIOELL SHUTTLE BOX son LOOMS Application'March 16,

1932, Serial No. 599,198

In Germany March 20, 1931 4 Claims.

The present invention relates to looms and embodies, more specifically, a change loom having a multi-cell shuttle box and provided with an improved means for controlling the braking 16 means of the shuttles, as well as the selective mechanism for actuating the shuttles.

More particularly, the invention embodies a multi-cell shuttle box for looms wherein the actuating mechanism therefor is mechanically interlocked with the brake mechanism for the shuttle to enable a proper selection and change of shuttles, at the same time aifording a simple shuttle operating mechanism and braking mechanism.

In existing forms of looms having multi-cell shuttle boxes, each cell is provided with independent braking mechanism for the shuttle contained therein. The resulting structure therefor becomes quite complex and in as much as the '20 brake mechanism is mounted on a moving part of-the loom, the motion of such part frequently has a deleterious effect upon the brake mechanism carried thereby. The speed of operation of change looms is therefore materially limited 5 and the cost thereof quite high in view of the number of individual parts required for the mechanisms of each cell. Moreover, the installation and timing of the considerable number of shuttle brakes requires time and great care in order that no shuttle may have exerted thereupon a different braking force than that exerted upon the others. The existing structures are furthermore quite noisy and the parts thereof are subjected to successive wear.

An object of the present invention, accordingly, is to provide an improved change loom construction embodying a multi-cell shuttle box having actuating and control mechanism of a greatly simplified nature.

A further object of the invention is to provide a multi-cell shuttle box with an improved braking mechanism whereby a single brake serves to exert a braking force upon a plurality of shuttles carried in different cells.

A further object of the invention is to provide a braking mechanism for the shuttles of a shuttle box having a plurality of cells, the brake mechanism being mounted upon a stationary part of the machine.

A further object or the invention is to provide a stationary shuttle box mechanism having means to enable the same to be rendered temporarily inoperative during the operation of changing shuttles.

A further object of the invention is toprovide v a change loom construction having a multi-cell shuttle box whereof the moving parts are reduced in number and. weight to facilitate the motion thereof.

A further object of the invention is to provide a mechanism for controlling the operation of the shuttle brake mechanism and shuttle actuating mechanism of a change loom, such controlling mechanism serving to disengage the brake and shuttle engaging mechanisms to facilitate the change of shuttles.

Further objects, not specifically enumerated above, will be apparent as the invention is described in greater detail in connection with the accompanying drawing, wherein:

Figure 1 is a view in front elevation showing a portion of a loom provided with a so-called step shuttle box having a shuttle change apparatus and provided with means for rendering the shuttle brake and shuttle engaging mechanism inoperative during the shuttle changing operation.

Figure 2 is a view in section, taken on line 2-2 of Figure 1, and looking in the direction of the arrows.

Figure 3 is a view in side elevation, showing the loom of Figure 1.

Figure 4 is a view in horizontal section, taken on line 44 of Figure 1, and looking in the direction of the arrows.

Figure 5 is a view similar to Figure 4, showing the shuttle brake and shuttle engaging mechanisms moved to an inoperative position.

Figure 6 is a view similar to Figure 2, showing a modified form of the invention.

Figure 7 is a view similar to Figure 2, showing a further modification of the invention as embodied upon a loom of the type having a revolving shuttle box.

With reference to Figures 1, 2, 3, 4, and 5, a loom frame is shown at 1, as provided with a lay sword 2 and a loom lathe 3. On the lay sword 2 is mounted a carrier 4 which is provided with guide tracks 5 and 6 in which a step shuttle box 11 is slidably mounted. Shuttle box 11 is provided with a plurality of cells, in the present instance, four cells being shown at '7, 8, 9, and 10.

In each cell a shuttle 12 is mounted which is actuated by a shuttle engaging mechanism or picker 14. Picker 14 is mounted slidably upon a rod 13 and is actuated by an arm 15 and shot mechanism of standard form. The specific shot mechanism forms no part of the present invention and a specific description thereof herein is not deemed necessary.

when one of the cells 7, 8, 9, or 10 is in operating position, its shuttle 12 is engaged by a brake lever 16 which is pivoted at 1'7 upon an arm 18, formed upon the lay of the machine. Arm 18 may also carry a spring for engaging the lever 16 and urging the same into engagement with the shuttles. The lever 16 is thus relieved of motion such as would be impressed upon it if it were mounted upon the shuttle box 11. In order that a change of cells may not interfere with the shuttle box lever 16, means is provided for disengaging the brake lever during the shuttle changing movement. To this end, a crank 39 is pivoted at 38 upon the carrier 4, the upper extremity of arm 39 having a cam 40 formed thereon. Cam 40 is adapted to engage a cooperating surface 41 on lever 16 and clockwise movement of crank 39 (as viewed in Figure 1) causes brake lever 16 to be moved into the position shown in Figure 5.

At 19 is indicated a shuttle change apparatus of standard'form, such apparatus actuating a link 20 which controls the position of the shuttle box 11. During the movement of the shuttle box, picker 14 is lifted from the points 21 of the shuttles 12 so that a change in the position of the shuttle box may not be interfered with. Such mechanism for rendering the picker 14 inoperative includes discs 22 and 23 which are actuated by the change apparatus 19. Recesses 24 and 25 are formed in the peripheries of the discs 22 and 23 and spaced 180. Rollers 26 and 27 engage upon the surfaces of the discs 22 and 23 and actuate arms 28 and 29 which are journaled at 30 and 31. The free ends 32 and 33 of the arms 28 and 29 engage a collar 34 secured to a rod 35 which is pivoted to an arm 36 of crank 39. The end of arm 36 is formed with a cam nose 3'? which is adapted to engage arm 15 to control the movement thereof. The shoulder or cam 37 limits the throw of arm 15 and the picker 14 and brake lever 16 are thus simultaneously disengaged from the shuttles in the shuttle box since the spring 15 normally urges the arm 15 and picker to an inoperative position.

The operation of the mechanism will thus be seen to be as follows. Upon a change of the shuttle box position, one or both of the discs 22 and 23 are rotated half a turn by the setting devices of the change apparatus 19. This results in the disengagement of picker 14 from the point 21 by reason of the movement of arm 15 to the left, as viewed in Figure 1 under the tension of spring 15'. Simultaneously, the cam 40 engages the end of the brake lever 16 and lifts the same from the shuttle 12. After completion of the setting operation of the shuttle box 11 (when one or both discs 22 and 23 have made a half revolution) rollers 26 and 27 again engage the recesses 25 and 26 so that the picker 14 and brake lever 16 may move into engagement with the new shuttle which has been moved into the shot position. Such actuation occurs before the shot movement of the shuttle begins.

In the construction shown in Figure 6, a step shuttle box is illustrated of the so-called undershot type. In this form, the brake lever 43 is mounted between the shuttle box 44 and an arm 45 secured to the loom lathe. The shot rod 46, as well as the pick 47 are located upon the front of the shuttle box 44 in the construction shown in Figure 6.

In the construction shown in Figure '7, the invention is shown as being applied to a revolving shuttle box in a loom of the so-called over-shot type. The shuttle box 48 is provided with cells 49, 50, 51, and 52. These elements are rotated about an axis 53 which is formed upon the loom lathe above the upper cell 49, and in operative position with respect to the same, brake lever 54 is provided, the lever being hingedly mounted upon the loom lathe in such fashion that rotation of the shuttle box 43 brings the cells 50, 51, 52 and 49 successively under the brake lever 54. The construction described in connection with Figures 1, 2, 3, and 4 for lifting the brake lever may be utilized in the construction shown in Figures 6 and '7. In the construction shown in Figure 7, the shuttle 55 is actuated by a pick 56, pull strap 57 and shot rod 58 in a well known manner.

While the invention has been described with specific reference to the accompanying drawing, it is not to be limited, save as defined in the appended claims.

I claim as my invention:

1. A loom lay having a multi-cell shuttle box, means for actuating shuttles in the box selectively, a brake mounted on the lay and adapted to engagea shuttle in shot position, and means actuated by operating means for the shuttle box to disengage the brake from the shuttle.

2. A loom lay having a multi-cell shuttle box and operating means therefor, means for actuating shuttles in the box selectively, a brake on the lay adapted to engage a selected shuttle, and common means for disengaging the shuttle actuating means and brake from a shuttle.

3. A loom lay having a multi-cell shuttle box and operating means therefor, means for actuating shuttles in the box selectively, a brake on the lay adapted to engage a selected shuttle, and common means actuated by the box operating means for operating the brake and. shuttle actuating means.

4. A loom having a multi-cell shuttle box and change apparatus therefor, a picker for engaging a selected shuttle, means to actuate the picker, a brake adapted to engage a shuttle in shot position, and means actuated by the change apparatus to disengage the picker and brake from a shuttle. n

JEAN LASSKER. 

